545005613 has 4 divisors (see below), whose sum is σ = 563798940. Its totient is φ = 526212288.

The previous prime is 545005609. The next prime is 545005621. The reversal of 545005613 is 316500545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203975524 + 341030089 = 14282^2 + 18467^2 .

It is a cyclic number.

It is not a de Polignac number, because 545005613 - 2² = 545005609 is a prime.

It is a super-2 number, since 2×545005613² = 594062236403011538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 18793297 = 545005613 / (5 + 4 + 5 + 0 + 0 + 5 + 6 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545005603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9396620 + ... + 9396677.

It is an arithmetic number, because the mean of its divisors is an integer number (140949735).

Almost surely, 2^545005613 is an apocalyptic number.

It is an amenable number.

545005613 is a deficient number, since it is larger than the sum of its proper divisors (18793327).

545005613 is a wasteful number, since it uses less digits than its factorization.

545005613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18793326.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 545005613 is about 23345.3552767997. The cubic root of 545005613 is about 816.8337212238.

The spelling of 545005613 in words is "five hundred forty-five million, five thousand, six hundred thirteen".